were no incident8involving espionage, sabotage, or aub~er$ion in connectionwith the operationsof the Task Force. c. CounterintelligencePlanning and Operations 10 SecurityControlof Personnel a. The extensivepersonnel8ecurityclearance program established for Operation SANDSTONE required that all individuals assigned to or associated with JTF-’7receive an ay?ropriate ClearanCe by the 13,000 individuals were so cleared, of whom more than IWO reoeived a ‘Qn clearance which was based upon a full background investigation by the FBI and approved by the Atomio Energy Commission. Of tk.eoverall total screened, only 38 persons were denied clearanoe one thirdhad and access to the projeat; of these,approximately Communistaffiliations, the remainderbeingremovedfor charaoter reasons. be The ‘Q” clearanceproce8s,which is requiredby the AtomicEnergyAct of 1946,is time consumingand, in order to meet deadlinesfor the early use of key personnel, resort was made to emergenoy ‘Qn clearances with successful results. In general, delays in ‘Qn olearing members of Joint Task Force Seven were beyondTa8k Force Control. c. The per80nnelseourityclearancesfor individualsassigned to collateralprojectswere, for convenience,processedthroughthe J-2 Sectionof Headquarters, JointTask Foroe Seven,and causedsome “Section II 74

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